[Bug 247647] if_vmx(4): Page fault when opening netmap port (IFLIB/DMA)

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=247647

--- Comment #21 from Vincenzo Maffione <vmaffione at FreeBSD.org> ---
I'm pretty sure what you see is the effect of a separate bug.

It's a regression introduced by porting netmap to iflib. It shows up with those
devices that use multiple "free lists" on the receive side. (e.g. isc_nfl > 1).
vmx is one of those devices.
I still have to find the time to look into that (e.g., figure out how these
free lists actually work).

Please feel free to open a separate bug, since this one is about the kernel
crash, and it's fixed.

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